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Microchip Technology 1N5272A/TR
- Part No.:
- 1N5272A/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
1N5272A/TR.pdf
- Description:
- DIODE ZENER 110V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:4,312
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Product details
Overview
1N5272A/TR from Microsemi is a 500 mW glass axial-lead Zener diode with nominal Zener voltage of 110 V, ±10% tolerance (A suffix), 1.1 mA test current, and 750 Ω dynamic impedance at 0.25 mA. It operates from −65 °C to +175 °C and is used for precision voltage reference and overvoltage protection in industrial power supplies.
For engineers reviewing the 1N5272A/TR datasheet, 1N5272A/TR pinout, 1N5272A/TR application, or 1N5272A/TR equivalent, key selection criteria include Zener voltage stability across temperature, low leakage current (<0.1 µA at 88 V), DO-35 package compatibility with through-hole PCB layouts, and RoHS-compliant plating options.
Technical Context
This device functions as a two-terminal voltage regulator in reverse-biased mode, where regulation occurs at the sharp breakdown knee. Its Zener impedance is specified at both IZT (1.1 mA) and IZK (0.25 mA), ensuring stable performance under varying load conditions.
The temperature coefficient of +0.110 %/°C applies over 25 °C to 125 °C at rated IZT, and thermal resistance is 250 °C/W junction-to-lead (3/8″ lead length). Forward voltage is ≤1.5 V at 200 mA, confirming standard silicon PN junction behavior.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 110 V - precise regulation point at 1.1 mA test current |
| Zener Tolerance | ±10% - guaranteed voltage range 99–121 V at 25 °C |
| Power Dissipation | 500 mW at 25 °C - derates linearly above 50 °C lead temperature |
| Zener Impedance | 750 Ω at IZK = 0.25 mA - indicates knee sharpness and low AC impedance near regulation threshold |
| Reverse Leakage Current | ≤0.1 µA at VR = 88 V - ensures minimal standby power loss in high-impedance bias networks |
| Operating Temperature | −65 °C to +175 °C - suitable for aerospace, downhole, and military environments |
| Thermal Resistance | 250 °C/W junction-to-lead - defines maximum allowable power at elevated ambient temperatures |
Pinout & Package
DO-35 (DO-204AH) hermetically sealed glass axial-leaded package with cathode band marking. Leads are tin-lead or RoHS-compliant matte-tin plated, solderable per MIL-STD-750 Method 2026. Weight: 0.2 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to circuit ground or lower-potential node during Zener operation |
| Cathode | Zener regulation terminal / voltage reference output | Banded end; connected to unregulated input; delivers stable 110 V to load when reverse-biased |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered Zener | Complies with JEDEC 1N52xx standard for interchangeability and test methodology |
| Radiation-hardened construction | Inherently radiation tolerant per MicroNote 050 - validated for total ionizing dose (TID) resilience |
| ESD-insensitive design | Passes MIL-STD-750 Method 1020 - no special handling required during assembly |
| Low capacitance | Typical <2 pF - preserves high-frequency signal integrity in RF bias and timing circuits |
| Military screening options | Available with MQ/MX/MV/MSP prefixes for JAN/JANTX/JANTXV/JANS levels - traceable lot control and extended testing |
Applications
| Industrial Power Supply Reference | Aerospace Voltage Clamp |
|---|---|
Use Scenario: Stabilized 110 V reference in isolated auxiliary supply for PLC I/O modules. IC Role / Device Role / Timing Role: Two-terminal passive voltage reference providing feedback setpoint to error amplifier. Use Value: Maintains ±10% regulation over −40 °C to +85 °C ambient, enabling reliable ADC calibration without active compensation. | Use Scenario: Overvoltage clamp on 100 V DC bus in satellite power distribution unit. IC Role / Device Role / Timing Role: Fail-safe shunt protector triggered during transient surges exceeding 121 V. Use Value: Withstands 175 °C junction temperature and resists single-event burnout, meeting MIL-PRF-19500 Class H requirements. |
| Test Equipment Calibration Standard | High-Voltage Sensor Bias Network |
Use Scenario: Precision voltage reference in portable multimeter front-end attenuator chain. IC Role / Device Role / Timing Role: Stable DC reference source for analog-to-digital conversion scaling. Use Value: Low 0.1 µA leakage at 88 V minimizes loading error in high-impedance divider networks (≥10 MΩ). | Use Scenario: Biasing photodiode amplifier in fiber-optic receiver operating at 110 V reverse bias. IC Role / Device Role / Timing Role: Low-noise, low-capacitance voltage source for sensor bias rail. Use Value: <2 pF capacitance prevents signal distortion at >10 MHz bandwidth; radiation hardness ensures long-term reliability in orbital missions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5272B/TR | ±5% tolerance (vs. ±10% for 1N5272A/TR); otherwise identical electrical and mechanical specs | Higher accuracy needed in metrology-grade references where 110 V ±5.5 V is insufficient | Select 1N5272B/TR when tighter voltage tolerance is required without changing layout or thermal design |
| MMBZ5272B-7-F | Surface-mount SOD-123 package; same 110 V ±5%; 200 mW rating; higher thermal resistance (400 °C/W) | Used in space-constrained consumer electronics where through-hole mounting is impractical | Choose MMBZ5272B-7-F only if board real estate is critical and power dissipation remains ≤200 mW |
Compared with 1N5272B/TR and MMBZ5272B-7-F, the 1N5272A/TR offers optimal balance of cost, legacy compatibility, and thermal performance in through-hole industrial designs-its 500 mW rating and 250 °C/W thermal resistance support higher continuous power than the SMT alternative, while its ±10% tolerance meets most non-critical regulation needs at lower cost than the B-suffix version.
Availability
1N5272A/TR is available at Aetrix Electronics and suitable for industrial power supplies, aerospace voltage clamps, test equipment calibration standards, and high-voltage sensor bias networks requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 1N5272A/TR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Microsemi (now part of Microchip Technology) is a U.S.-based semiconductor company specializing in high-reliability, radiation-hardened, and high-voltage analog components for aerospace, defense, and industrial markets.
The 1N52xx series was designed specifically for ruggedized voltage regulation in mission-critical systems where wide temperature operation, ESD immunity, and long-term parametric stability are mandatory.
FAQ
What is the Zener voltage tolerance for 1N5272A/TR?
The 1N5272A/TR has a nominal Zener voltage of 110 V with a ±10% tolerance, meaning its actual regulation voltage falls between 99 V and 121 V at 25 °C and 1.1 mA test current. This tolerance is confirmed by the "A" suffix per Microsemi's documentation and applies across the full operating temperature range, though voltage drift due to temperature coefficient (+0.110 %/°C) must be accounted for in precision designs.
Is 1N5272A/TR RoHS compliant?
Yes, the 1N5272A/TR is RoHS compliant when ordered with the "e3" suffix (e.g., 1N5272Ae3/TR). The base part number without "e3" uses traditional tin-lead plating; however, RoHS-compliant matte-tin plating is available per MIL-STD-750 Method 2026 and is standard for e3-suffixed variants. Always verify the suffix on the reel label or certificate of compliance.
What is the maximum reverse leakage current for 1N5272A/TR?
The maximum reverse leakage current for 1N5272A/TR is 0.1 µA at VR = 88 V (80% of nominal Zener voltage), measured at 25 °C. This low leakage supports high-impedance bias networks and minimizes power loss in battery-backed or energy-sensitive applications. Leakage increases with temperature but remains below 1 µA up to 125 °C per derating curves.
Can 1N5272A/TR be used in surface-mount designs?
No, the 1N5272A/TR is packaged in the axial-leaded DO-35 (DO-204AH) glass case and is intended for through-hole mounting only. For surface-mount equivalents, Microsemi offers the MLL5272B in DO-213AA (MELF) package-but that part has different thermal and mechanical characteristics and is not a drop-in replacement. Layout redesign and thermal validation are required.
What is the forward voltage specification for 1N5272A/TR?
The forward voltage for 1N5272A/TR is specified as ≤1.5 V at 200 mA forward current, consistent with standard silicon PN junction diodes. This parameter confirms expected rectifier behavior in forward bias and validates compatibility with conventional diode test fixtures and automated optical inspection (AOI) algorithms calibrated for silicon devices.
1N5272A/TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-204AH, DO-35, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 110 V
- Tolerance:
- ±10%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 750 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 80 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.5 V @ 200 mA
- Operating Temperature:
- -65°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AH (DO-35)
1N5272A/TR FAQ
1.How can I place an order for 1N5272A/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5272A/TR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for 1N5272A/TR reliable?
The price and inventory of 1N5272A/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5272A/TR is usually 5 days.
3.What payment methods are accepted for 1N5272A/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5272A/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5272A/TR?
1N5272A/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5272A/TR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for 1N5272A/TR?
For technical support, including 1N5272A/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5272A/TR requirements.
6.How does Aetrix verify that 1N5272A/TR is sourced from the original manufacturer or authorized distributors?
All 1N5272A/TR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that 1N5272A/TR meets industry standards.
7.What is the process for return or replacement of 1N5272A/TR?
All 1N5272A/TR units undergo pre-shipment inspection (PSI). If there is an issue with 1N5272A/TR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The 1N5272A/TR part is unused and in its original packaging.
Return procedure for 1N5272A/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5272A/TR Tags
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